Code Coverage |
||||||||||
Lines |
Functions and Methods |
Classes and Traits |
||||||||
| Total | |
84.85% |
56 / 66 |
|
25.00% |
1 / 4 |
CRAP | |
0.00% |
0 / 1 |
| WPCOM_REST_API_Proxy_Request | |
84.85% |
56 / 66 |
|
25.00% |
1 / 4 |
24.84 | |
0.00% |
0 / 1 |
| proxy_request_to_wpcom | |
86.21% |
50 / 58 |
|
0.00% |
0 / 1 |
17.76 | |||
| proxy_request_to_wpcom_as_user | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
| proxy_request_to_wpcom_as_blog | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
| drop_unsafe_query_keys | |
100.00% |
6 / 6 |
|
100.00% |
1 / 1 |
4 | |||
| 1 | <?php |
| 2 | /** |
| 3 | * Trait WPCOM_REST_API_Proxy_Request |
| 4 | * |
| 5 | * Used to proxy requests to wpcom servers. |
| 6 | * |
| 7 | * @package automattic/jetpack-connection |
| 8 | */ |
| 9 | |
| 10 | namespace Automattic\Jetpack\Connection\Traits; |
| 11 | |
| 12 | use Automattic\Jetpack\Connection\Client; |
| 13 | use Automattic\Jetpack\Connection\Manager; |
| 14 | use Automattic\Jetpack\Status\Visitor; |
| 15 | use WP_Error; |
| 16 | use WP_REST_Request; |
| 17 | |
| 18 | trait WPCOM_REST_API_Proxy_Request { |
| 19 | |
| 20 | /** |
| 21 | * Base path for the API. |
| 22 | * |
| 23 | * @var string |
| 24 | */ |
| 25 | protected $base_api_path; |
| 26 | |
| 27 | /** |
| 28 | * Version of the API. |
| 29 | * |
| 30 | * @var string |
| 31 | */ |
| 32 | protected $version; |
| 33 | |
| 34 | /** |
| 35 | * The base of the controller's route. |
| 36 | * |
| 37 | * @var string |
| 38 | */ |
| 39 | protected $rest_base; |
| 40 | |
| 41 | /** |
| 42 | * Proxy request to wpcom servers on behalf of a user or using the Site-level Connection (blog token). |
| 43 | * |
| 44 | * @param WP_REST_Request $request Request to proxy. |
| 45 | * @param string $path Path to append to the rest base. |
| 46 | * @param string $context Whether the request should be proxied on behalf of the current user or using the Site-level Connection, aka 'blog' token. Can be Either 'user' or 'blog'. Defaults to 'user'. |
| 47 | * @param bool $allow_fallback_to_blog If the $context is 'user', whether we should fallback to using the Site-level Connection in case the current user is not connected. |
| 48 | * @param array $request_options Request options to pass to wp_remote_request. |
| 49 | * |
| 50 | * @return mixed|WP_Error Response from wpcom servers or an error. |
| 51 | */ |
| 52 | public function proxy_request_to_wpcom( $request, $path = '', $context = 'user', $allow_fallback_to_blog = false, $request_options = array() ) { |
| 53 | $site_path = ltrim( $this->rest_base, '/' ) . ( $path ? '/' . ltrim( (string) $path, '/' ) : '' ); |
| 54 | |
| 55 | // Route captures arrive already decoded, so any of these would change which resource the outgoing URL names. |
| 56 | if ( preg_match( '#[?\#%\s]|(^|/)\.\.?(/|$)#', $site_path ) ) { |
| 57 | return new WP_Error( |
| 58 | 'rest_invalid_param', |
| 59 | __( 'Invalid request path.', 'jetpack-connection' ), |
| 60 | array( 'status' => 400 ) |
| 61 | ); |
| 62 | } |
| 63 | |
| 64 | $blog_id = \Jetpack_Options::get_option( 'id' ); |
| 65 | $path = '/sites/' . rawurldecode( $blog_id ) . '/' . $site_path; |
| 66 | $query_params = $request->get_query_params(); |
| 67 | $manager = new Manager(); |
| 68 | |
| 69 | /* |
| 70 | * A rest_route parameter can be added when using plain permalinks. |
| 71 | * It is not necessary to pass them to WordPress.com, |
| 72 | * and may even cause issues with some endpoints. |
| 73 | * Let's remove it. |
| 74 | */ |
| 75 | if ( isset( $query_params['rest_route'] ) ) { |
| 76 | unset( $query_params['rest_route'] ); |
| 77 | } |
| 78 | unset( $query_params['_method'] ); |
| 79 | $query_params = self::drop_unsafe_query_keys( $query_params ); |
| 80 | $api_url = $query_params ? $path . '?' . http_build_query( $query_params, '', '&' ) : $path; |
| 81 | |
| 82 | $request_options = array_replace_recursive( |
| 83 | array( |
| 84 | 'headers' => array( |
| 85 | 'Content-Type' => 'application/json', |
| 86 | 'X-Forwarded-For' => ( new Visitor() )->get_ip( true ), |
| 87 | ), |
| 88 | 'method' => $request->get_method(), |
| 89 | ), |
| 90 | $request_options |
| 91 | ); |
| 92 | |
| 93 | // If no body is present, passing it as $request->get_body() will cause an error. |
| 94 | $body = $request->get_body() ? $request->get_body() : null; |
| 95 | |
| 96 | // The body goes out as JSON, so WordPress.com must read it the way this site did. |
| 97 | // A request built in code has no route, and older callers build one with an unlabelled JSON body. |
| 98 | $is_unlabelled_internal = '' === $request->get_route() && null === $request->get_content_type(); |
| 99 | if ( null !== $body && ! $request->is_json_content_type() && ! $is_unlabelled_internal ) { |
| 100 | return new WP_Error( |
| 101 | 'rest_invalid_content_type', |
| 102 | __( 'This endpoint only accepts a JSON request body.', 'jetpack-connection' ), |
| 103 | array( 'status' => 415 ) |
| 104 | ); |
| 105 | } |
| 106 | |
| 107 | $response = new WP_Error( |
| 108 | 'rest_unauthorized', |
| 109 | __( 'Please connect your user account to WordPress.com', 'jetpack-connection' ), |
| 110 | array( 'status' => rest_authorization_required_code() ) |
| 111 | ); |
| 112 | |
| 113 | if ( 'user' === $context ) { |
| 114 | if ( ! $manager->is_user_connected() ) { |
| 115 | if ( false === $allow_fallback_to_blog ) { |
| 116 | return $response; |
| 117 | } |
| 118 | |
| 119 | $context = 'blog'; |
| 120 | } else { |
| 121 | $response = Client::wpcom_json_api_request_as_user( $api_url, $this->version, $request_options, $body, $this->base_api_path ); |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | if ( 'blog' === $context ) { |
| 126 | if ( ! $manager->is_connected() ) { |
| 127 | return $response; |
| 128 | } |
| 129 | |
| 130 | $response = Client::wpcom_json_api_request_as_blog( $api_url, $this->version, $request_options, $body, $this->base_api_path ); |
| 131 | } |
| 132 | |
| 133 | if ( is_wp_error( $response ) ) { |
| 134 | return $response; |
| 135 | } |
| 136 | |
| 137 | $response_status = wp_remote_retrieve_response_code( $response ); |
| 138 | $response_body = json_decode( wp_remote_retrieve_body( $response ), true ); |
| 139 | |
| 140 | if ( $response_status >= 400 ) { |
| 141 | $code = $response_body['code'] ?? 'unknown_error'; |
| 142 | $message = $response_body['message'] ?? __( 'An unknown error occurred.', 'jetpack-connection' ); |
| 143 | |
| 144 | return new WP_Error( $code, $message, array( 'status' => $response_status ) ); |
| 145 | } |
| 146 | |
| 147 | return $response_body; |
| 148 | } |
| 149 | |
| 150 | /** |
| 151 | * Proxy request to wpcom servers on behalf of a user. |
| 152 | * |
| 153 | * @param WP_REST_Request $request Request to proxy. |
| 154 | * @param string $path Path to append to the rest base. |
| 155 | * @param array $request_options Request options to pass to wp_remote_request. |
| 156 | * |
| 157 | * @return mixed|WP_Error Response from wpcom servers or an error. |
| 158 | */ |
| 159 | public function proxy_request_to_wpcom_as_user( $request, $path = '', $request_options = array() ) { |
| 160 | return $this->proxy_request_to_wpcom( $request, $path, 'user', false, $request_options ); |
| 161 | } |
| 162 | |
| 163 | /** |
| 164 | * Proxy request to wpcom servers using the Site-level Connection (blog token). |
| 165 | * |
| 166 | * @param WP_REST_Request $request Request to proxy. |
| 167 | * @param string $path Path to append to the rest base. |
| 168 | * @param array $request_options Request options to pass to wp_remote_request. |
| 169 | * |
| 170 | * @return mixed|WP_Error Response from wpcom servers or an error. |
| 171 | */ |
| 172 | public function proxy_request_to_wpcom_as_blog( $request, $path = '', $request_options = array() ) { |
| 173 | return $this->proxy_request_to_wpcom( $request, $path, 'blog', false, $request_options ); |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Drop, at every depth, the params whose key is not made of letters, digits, `_` and `-`. |
| 178 | * |
| 179 | * Any other key can turn into a different key if code on the way to WordPress.com decodes the query again, as `add_query_arg()` does. |
| 180 | * |
| 181 | * @param array $params Query params. |
| 182 | * @return array |
| 183 | */ |
| 184 | private static function drop_unsafe_query_keys( array $params ): array { |
| 185 | $safe = array(); |
| 186 | |
| 187 | foreach ( $params as $key => $value ) { |
| 188 | if ( ! preg_match( '/^[A-Za-z0-9_-]+$/', (string) $key ) ) { |
| 189 | continue; |
| 190 | } |
| 191 | |
| 192 | $safe[ $key ] = is_array( $value ) ? self::drop_unsafe_query_keys( $value ) : $value; |
| 193 | } |
| 194 | |
| 195 | return $safe; |
| 196 | } |
| 197 | } |